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Add fan/pump energy for non-electric water heaters #1628

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afontani opened this issue Feb 23, 2024 · 1 comment

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afontani commented Feb 23, 2024 •

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@jmaguire1 and I were talking. Can we add energy for vent fans and fuel oil pumps?

Natural Gas: High efficiency need power vent fans. Condensing water heaters might have a different fan power than the power vented fans.
Fuel Oil: What is the a reasonable value for the pump power? Are there fans, possibly all are natural draft?

Probably here:

OpenStudio-HPXML/HPXMLtoOpenStudio/resources/waterheater.rb

Line 1725 in 26fdf9c

# FUTURE: These are always zero right now; develop smart defaults.

afontani assigned jmaguire1

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shorowit commented Mar 5, 2024

I assume this energy use is not part of the EF/UEF ratings, right @jmaguire1?

Might cause us to fail HERS tests if we change the default?

Might want to propose HPXML schema changes to be able to specify these inputs like is done for furnaces?

shorowit added the enhancement label

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